模拟采用二级目录结构的磁盘文件系统中的文件操作（操作系统） 一、数据结构...

输入某年某月某日，判断这一天是这一年的第几天？-The importation of a certain period of a day, this is the one to judge the first few days this year?

通过类似于文件读写一样可读写磁盘的指定扇区-similar to the documents adopted by the same reader can read and write disk designated Sector

可以将一个大文件分成多个小文件，然后可以将多个小文件合并成一个大文件-Can be a large file into multiple small files, and then a number of small files can be merged into one large file

一个简单的分文件程序，将指定的文本文件内容，一行用作一个文件名，也用作该文件的内容，建立文件-a simple breakdown of documentation procedures, will be designated as a text file, and his party for a name, also for the contents of the document, document

模拟进程利用双向邮箱通信 随机生成一个邮箱，两个进程利用该邮箱相互通信，信息的大小与邮箱的大小相同。哪一个进程为发送进程，哪一个进程为接收进程是随机的，由随机函数随机选择。但是若一进程成为发送进程，那么另一个进程只能是接收进程。如果没有申请到资源，就不能建立邮箱，发送进程不能发送消息。如果邮箱中没有空闲单元，发送进程不能够发送消息；如果邮箱中没有消息，接收进程不能够接收消息。-modeling process using two-way communications mail generates a random mailbox, the two processes use of the mail to communicate with each other, information and the size of the same size mail. A process for which this process, a process for which the receiving process is random, random function randomly selected. However, if this process is to be a process, then another process can only be receiving process. If there is no application of resources, the building of mail, send process can send messages. If the mailbox no spare units, sending process can not send messages; If no news mail, the receiving process can not receive information.

扫描子文件夹的示例，对某些文件夹操作，查找等特别有用。看似简单但不知道，对有些操作就会特头痛。 //复杂的程序都是由不起眼的东东拼凑起来的-scan subfolders example, the right to operate certain folder, find out as particularly useful. Seemingly simple, but I do not know, for some special operation will be a headache.// Complex procedures are unremarkable pieced together Wanton

使用FileReader和FileWriter类，采用字符文件访问方式操作文件-FileReader and FileWriter use category, the use of characters in a document file access operations

一个简单的设置开机启动项，并且创建一个矩形计算文件，包含.vbs 和c  

文件读写类，设置文件的路径,读取文件的路径等

c# direct printing and sending commands and string to printer